To be honest, I didn’t really intend it to fall under there, I’d kinda envisioned a strictly linear set of tags in series of escalating graphicness. Mild rope bondage and the like seems more or less softcore to me, [Fetish] was meant to be reserved for more extreme stuff like spanking, bruising, etc. With that said though, as someone who is into bondage, I don’t know if I necessarily feel comfortable making that amendment to the rules and explicitly allowing it under [Soft] and [Hard] without input.
I was wondering about this myself. One of the images I’ve bookmarked to post at some point depicts a lady penetrating herself with a finger. Going by the letter of the rules there is penetration so it should be tagged [Hard]. However the mood of the image is playful and teasing and not in the least bit hardcore, so [Soft] seems more appropriate. I actually don’t think it matters much if people just go with their instincts for these borderline cases, so long as more extreme imagery is tagged appropriately.